Every standard cholesterol test lists triglycerides alongside LDL and HDL, yet most people scan straight past the number. That gap matters. Roughly one in three US adults carries an elevated level, and triglycerides are a distinct piece of the cardiovascular risk picture.
The National Institutes of Health defines four clinical ranges, and where you sit on the scale changes what your doctor is likely to recommend.
The four ranges to know
The NIH's MedlinePlus service puts a normal fasting triglyceride level below 150 mg/dL, borderline high at 150 to 199 mg/dL, high at 200 to 499 mg/dL, and very high at 500 mg/dL and above. According to the same NIH page, levels above 150 mg/dL may raise the risk of heart disease.
Category Also read: Going to bed at different times each night may quietly double your heart risk | Fasting level (mg/dL) |
|---|---|
Normal | Less than 150 |
Borderline high Also read: When rotten-egg gas won't quit: what your gut may be trying to tell you | 150 to 199 |
High | 200 to 499 |
Very high Also read: The point where extra protein starts to strain your kidneys and bones | 500 and above |
The very-high band carries a second risk beyond the heart. High triglycerides are also linked to acute pancreatitis, an inflammation of the pancreas that usually requires hospital care.
The 2026 ACC/AHA dyslipidemia guideline, published in March 2026, singles out triglyceride-directed therapy for people at or above 1,000 mg/dL specifically to head off that outcome.
How common elevated triglycerides really are
Elevated triglycerides are widespread. An analysis of NHANES data from 2007 to 2014 found that 32.1 percent of US adults, roughly 70.5 million people, had triglycerides of 135 mg/dL or higher. Even among adults on statins, 39 percent still had an elevated level.
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Triglycerides are the most common fat in the body. They come from food such as butter and oils, and any calories the body does not immediately need are converted into triglycerides and stored in fat cells.
What pushes the number up
Several everyday factors drive levels higher. The NIH lists excess calories (especially sugary foods), being overweight, heavy alcohol use, smoking and certain medications. Poorly controlled type 2 diabetes, thyroid disease, and liver or kidney disease also play a role.
Metabolic syndrome, a cluster of risks that includes belly fat, high blood pressure and insulin resistance (meaning the body's cells respond less effectively to insulin), often shows up on a lipid panel first as high triglycerides.
The lifestyle levers that work
A 2011 American Heart Association scientific statement led by Michael Miller of the University of Maryland reviewed more than 500 studies and put concrete numbers on the effect of lifestyle change.
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Substituting unsaturated fats for saturated fats, adding physical activity and losing excess weight can cut triglycerides by 20 to 50 percent, according to the AHA statement. Moderate-intensity activity such as brisk walking for at least 150 minutes a week can add another 20 to 30 percent reduction on top.
The same statement recommends limiting added sugar to less than 5 to 10 percent of daily calories, keeping fructose from all sources below 50 to 100 grams a day, and holding saturated fat under 7 percent of calories. Cutting alcohol matters especially when triglycerides run above 500 mg/dL.
Fatty fish such as salmon, herring, sardines and albacore tuna deliver the omega-3 fatty acids the AHA highlights for triglyceride lowering. Everyday foods including oats, nuts and legumes may also quietly move the number.
When medication enters the picture
Lifestyle is the first step, but not always enough. The NIH notes that some people will also need cholesterol medicines to lower their triglycerides, and the 2026 ACC/AHA guideline positions statin therapy as the pharmacological foundation, alongside lifestyle change, for reducing atherosclerotic cardiovascular disease risk.
Anyone whose reading falls in the high or very-high bands should talk to their doctor about next steps, particularly if other risk factors such as diabetes or a family history of early heart disease are also present.
This article is made and published by Jesper Bengtson, who may have used AI in the preparation.